SN74LVC1G123DCTR

Overview

The SN74LVC1G123DCTR is a single retriggerable monostable multivibrator from the Texas Instruments LVC logic family, housed in an 8-pin VSSOP package. It operates within a supply voltage range of 1.65 V to 5.5 V and supports mixed-mode voltage operation across all ports. The device features Schmitt trigger inputs on A and B terminals to handle slow input transition rates without jitter. Key electrical parameters include a maximum propagation delay of 18.6 ns at 1.8 V, a maximum quiescent current of 20 µA, and output drive capabilities of ±32 mA. It functions reliably across an industrial temperature range of -40°C to +125°C.

Feature Summary

• Supports retriggerable operation for extending output pulse duration during active timing cycles
• Integrates Schmitt trigger inputs on both A and B terminals to eliminate output jitter from slow signal transitions
• Enables flexible pulse width programming through external resistor and capacitor connections
• Provides glitch-free power-on reset functionality on the output terminal

Applications

• Audio and video receiver timing control
• Blu-ray player and home theater system synchronization
• Digital camera (DVC) signal processing
• GPS personal navigation device timing
• Solid-state drive (SSD) client and enterprise controller interfaces

Procurement Notes

Verify the specific suffix 'DCTR' corresponds to the VSSOP-8 package and tape-and-reel shipping configuration required for your assembly line. Confirm that the operating voltage requirements align with the 1.65 V to 5.5 V specification. Ensure thermal management strategies accommodate the -40°C to +125°C operational range. Cross-reference the RoHS compliance status with current environmental regulations for your target market before finalizing procurement orders.

Selection Notes

Select this component when a compact, low-power solution for precise pulse generation or debouncing is required. The LVC series offers compatibility with modern low-voltage microcontrollers while maintaining robust 5V tolerance on inputs. Consider the VSSOP-8 footprint if space constraints limit the use of larger packages like SSOP or DSBG. Evaluate the need for retriggerable functionality versus non-retriggerable alternatives based on the specific timing requirements of the application circuit.

Part Context

This device belongs to the SN74LVC1G123 series of single monostable multivibrators manufactured by Texas Instruments. The LVC logic family is designed for low-voltage CMOS applications, offering high speed and low power consumption. The 'DCTR' designation specifically identifies the VSSOP-8 surface-mount package variant supplied in a tape-and-reel format suitable for automated pick-and-place manufacturing processes.

Replacement Considerations

Publicly confirmed substitute part numbers include SN74LVC1G123DCUR and SN74LVC1G123DCTT. Verify pinout compatibility and package dimensions before substitution. Ensure that the alternative package type meets the mechanical constraints of the existing PCB layout.